In man purine metabolism results in the formation of

Options

A. Urea
B. Uric acid
C. Ammonia
D. Allantoin

Answer

### Step-by-Step Solution:

1. **Understanding Purine Metabolism**:
- Purine metabolism refers to the biochemical processes involved in the synthesis and breakdown of purines, which are nitrogenous bases found in nucleotides (the building blocks of DNA and RNA).

2. **Location of Purine Metabolism**:
- In humans, purine metabolism primarily occurs in the liver. The liver plays a crucial role in the conversion of purines into various metabolites.

3. **Breakdown of Purines**:
- During the breakdown of purines, they are converted into several components. This process is essential for maintaining the balance of nucleotides in the body.

4. **Formation of By-products**:
- The breakdown of purines leads to the formation of several by-products. One of the key by-products of purine metabolism is uric acid.

5. **Excretion of Uric Acid**:
- Uric acid is the final product of purine metabolism in humans. It is then excreted from the body through urine.

6. **Conclusion**:
- Therefore, in humans, purine metabolism results in the formation of uric acid.

### Final Answer:
In man, purine metabolism results in the formation of **uric acid**.

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